trans-1,2-Dichloroethylene
Lexington & Joseph Harp Correctional Institution
1,2-Dichloroethylene, a neurotoxic solvent, exists in two different forms: trans-1,2-dichloroethylene and cis-1,2-dichloroethylene. A mixture of the two forms is used to manufacture other solvents and chemical products.
Samples
Samples exceeding legal limit (MCL)
Samples exceeding
health guidelines
Testing results - average by year
| Year | Average result | Samples taken | Detections | Range of results |
|---|---|---|---|---|
| 2014 | ND | 3 | 0 | ND |
| 2015 | ND | 4 | 0 | ND |
| 2016 | ND | 6 | 0 | ND |
| 2017 | ND | 4 | 0 | ND |
| 2018 | ND | 2 | 0 | ND |
| 2019 | ND | 1 | 0 | ND |
ppb = parts per billion
State and national drinking water standards and health guidelines
EWG Health Guideline 60 ppb
The EWG Health Guideline of 60 ppb for trans-1,2-dichloroethylene was defined by the California Office of Environmental Health Hazard Assessment as a public health goal, the level of a drinking water contaminant that does not pose a significant health risk. This health guideline protects against harm to internal organs.
EPA Maximum Contaminant
Level (MCL) 100 ppb
The legal limit for trans-1,2-dichloroethylene, established in 1991, was based on a toxicity study in laboratory animals conducted in the 1980s.
ppb = parts per billion
All test results
| Date | Lab ID | Result |
|---|---|---|
| 2014-02-28 | 039960.004 | ND |
| 2014-02-28 | 039960.003 | ND |
| 2014-02-28 | 039960.002 | ND |
| 2015-03-17 | 053712.004 | ND |
| 2015-03-17 | 053712.003 | ND |
| 2015-03-17 | 053712.002 | ND |
| 2015-03-17 | 053712.001 | ND |
| 2016-03-29 | SDWA-1023770-00 | ND |
| 2016-03-29 | SDWA-1023772-00 | ND |
| 2016-03-29 | SDWA-1023771-00 | ND |
| 2016-07-27 | SDWA-1044868-00 | ND |
| 2016-07-27 | SDWA-1044862-00 | ND |
| 2016-07-27 | SDWA-1044846-00 | ND |
| 2017-03-21 | SDWA-1137468-00 | ND |
| 2017-04-06 | SDWA-1144653-00 | ND |
| 2017-04-06 | SDWA-1144649-00 | ND |
| 2017-04-06 | SDWA-1144644-00 | ND |
| 2018-04-04 | SDWA-1249411-00 | ND |
| 2018-04-04 | SDWA-1249406-00 | ND |
| 2019-02-06 | SDWA-1338919-00 | ND |